Hoisting and conveying apparatus.



No 827,247. r Y PATENTED JULY 31, 19061 N P. w. LOVBLL.

HOISTING AND CONVEYING APPARATUS.

APPLICATION IILBD APB.9.1906.

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P. w. LOVELL.

HOISTING AND OONVEYING APPARATUS.

APPLICATION FILED APR. 9.1906.

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Q A 1' M Q 'a 3 5% a P 7 2L l lna /e71 01? R p WM L zwg Z 4 MM hFREDERICK W. LOWELL,-

OF CLEVELAND, OHIO, ASSIGNOR'TOTTHE MGMYLER MANUFACTURING COMPANY. OF CLEVELAND, OHIO,

' A CORPORATION OHIO.

HOISTING AND CONVEYING Pia os;

' Specification of Letters Patent.

: PatentedJuly a1, 1900.

7 Application filed April 9, 1906. Serial E0. 310,688;

To all it may concern.-

Be it known that I, Fnnnnmox W. LOVELL,

' a citizen of the United States, residing at .Oonzglyin 1s a l,

Cleveland in the county-of Ouyahoga and State of dhio, have inventeda certam new and useful Improvement in Hoisting and Apparatus, of which the following ear, and exact description.

The mvention relates to certain improvements in the class of hoisting and conveying apparatus which commonly includes a bridge, a trolley movable thereon, a bucket supported from said trolley by suitable ropes, guidesheaves, and rope-take-up mechanisms by means of which the trolley may be moved backward and forward on the bridge and the bucket may be raised or lowered and opened or closed.

The object of .the invention is to'provide novel means whereby the trolley may be made to traverse the bridge in either direction while the bucket is being raised or lowered and which permits the bucket to be raised or lowered and. o ened or closed irrespective of the position 0 the trolley; and one ofthe special objects of the invention is to provide for the stated purpose means which permits the use of comparatively short hoistlug-ropes.

The distinctively novel features of the inventionreside particularly in the arrangement of the hoisting-ropes and their adjunctive devices intermediate of the bucket and the take-up devices, and also in the means which may be employed in connection therewith to cause the required movement of the trolley,

all of which will be hereinafter described, and

pointed out definitely in the claims.

. In the drawings ,Figure 1 is a side elevation of a hoisting and conveyi apparatus equipped with my invention. %ig. 2 is a dia ammatic view showing the ropes and ta e-up mechanism for raising and closing the bucket. Fig. 3 is a diagrammatic view showing one arrangement of the ropes and take-up mechanism for causing the trolley to move backward and forward upon the bridge. Fig. 4-is a diagrammatic view of an alternatearrangement of the instrumentalities shown in Fig. 3, and

Fig. 5' is a diagrammatic view showing a satisfactory arrangement of the holding rope and its take-up mechanism.

. Referring to the parts by letters, A represents the track-supporting member, which is usually in the form .of a bridge su ported at the roper elevation by an suitab e means-- it3s,B or example, by the uilt-up standards 0 represents the trolley, which is provided with wheels 0, desi ed to run on tracks a u on the bridge, WhlOh tracks extend, prefera ly, from one end of the bridge to the other. a represents other tracks on the upper portion of the bridge, which tracks are provided for the support of an auxiliary carria e D which is movable thereon. 4 g

The two hoisting-ropes E E, which are also utilized for closing the bucket, are connected therewith at one end in such manner,

well understood in this art, as will enable them to perform that function. At their other ends these ropes are connected with rope-take-up mechanism, which may be a winding-drum J, -on which both ropes are wound in the same direction. From the bucket the ropes extend upward to the trolley over sheaves c c thereon, and thence in opposite directions to points near the ends of tracks a, Where said ropes run, res ectively, over sheaves G G, mounted upon the bridge.

Following these ropes beyond these points where said sheaves are located, it will be seen that said ropes are respectively provided with the loops e e, which extend toward each other and res ectivel embrace the two sheavesdd ont e a 'a carriage D. Beyond these loops the ropes E are bent over the required sheaves to lead them to the winding-drum. It is evident that by simultaneously takin in or pa out these ropes the bucket will e close and raised or lowered without imparting to the trolley any tendency to move in either direction. It is equally evident that if the trolley be moved without at the same time turning the drum J the bucket F will be neither raised nor lowered nor opened or closed, because when the trolley moves to the left, for example, the loop e of the rope E, which goes around the sheave (1, will be shortened, while simultaneously the loop e of-the rope E, which passes around the sheave 11, will be lengthened, which will of course result in the movement to the right of the auxiliary carriage D one-half the distance which the trolley 0 moves.

The rope for traversing the trolley may be tion shown in Fig. 4 mpg 3 arranged as shown clearly in Fig. 3that-is to say, rope K may beeonnectedwith-the auxiliary cairiage and pass over the sheave dc-sheave M, down to the M, then over a mu -drum while the ro e K may be secure to the other end of sai carriage and may pass over the sheave M and thence down to the same winding-drum O but the two ropes K K must be wound in opposite directions from this drum, so that as one rope is taken up the other will be paid out.

As alternative to the above-described arrangement of the trolley-ropes the construc be adopted-that is to say, two ro es K may be'secured to opposite ends 0 the trolley and may pass, respectivel therefrom in op osite directions over the s eaves M M an thence toward each other over sheaves N N down to the winding-drum 0, upon which said ropes will be wound in opposite directions.

It is the intention to employ in connection with the mechanism shown a bucket of the type which is automaticall opened and c osed by means of suitab e ropes. The ropes E E as described, are the ropes for closing the ucket. In Fig. 5 is shown an arraniement of the rope for opening the hue ct, which rope is commonly. called the holding-rope. This ro e (indicated by P) is dead-ended at one emfof the bridge and passes over sheaves c c on-the trolley down in the form of a loop 1) between said sheaves, which loop receives a sheave f on the bucket. The rope after leaving sheave 0* passes over a sheave Q, at the end of the bridge, then over a guide-sheave Q to an independent winding-drum R. When the trolley is being moved back and forth upon the bridge, one side of the loop p, in which the sheave f is hung, is taken up, while the other side of said loop is equally paid out, so that the length of the loop is not affected. It is obvious that the hoisting or lowering of the bucket may go on while the trolley is moving in either direction, as well as while it is stationary. Attention is further called to the fact that less ro e is reguired with the construction above escribed than with any other apparatus havin like functions.

' avin described my invention, I claim 1. In oisting' and conveying mechanism, the combination of a guideway, a trolley movable thereon, a bucket, and rope-take-up mechanism, with two rope-strands which ongage with the bucket and are connected with the take-up mechanism, which'rope-strands pass from the bucket up to the trolley and thence in opposite directions to points near the ends of said I deway, said rope-strands being respective provided, beyond said points, with loops which extend toward each other, two sheaves-in said loops respectively, and a movablemember in which said two sheaves are mounted.

2, In hoisting and conveying mechanism, the combination of a bridge, two tracks thereon, a trolley movable on one track, an auxil iary carriage movable upon the other track, a bucket, and rope-take-up mechanism, with two ropes which pass from the bucket upward to the trolley, two sheaves mounted on the trolley over which said ropes pass and from which they extend in opposite directions, sheaves near the end of the trolleytrack over which said ro es pass and from thence extend toward eac other and toward 'the auxiliary carriage, two sheaves mounted upon said auxiliary carriage over which said ropes respectively pass an from whieh'they extend in opposite directions, and guidesheaves between said supplemental carriage and take-up mechanism.

3. In hoisting and'conveying mechanism, the combination of a guideway, a trolley movable thereon, a bucket and r0 -take-up mechanism, with two ropes -whic are eonnected at their respective ends with the bucket and with the take-up mechanism, which ropes pass from the bucket up to the trolley and t ence in opposite directions to points near the ends of said guideway, said ropes being respectively provided beyond said points with loops which extend toward each other, two sheaves in said loops respeo tively, a movable member in which said two sheaves are mounted, and means fortraversing said trolley backward and forward on said guideway.

4. In hoisting and conveying mechanism, the combination of a guideway, a trolley movable thereon, a bucket, and ro -takeupmechanism, with two ropes whic are connected at their respective ends with the bucket and with the take-up mechanism, which ropes ass from the bucket up to the trolley and t ence in o posite directions to a point near the ends 0? said guideway, said ropes being respectively provided beyond said points with loops which extend toward each other, two sheaves in said loops res tively, a movable member in which said two sheaves are mounted, two ropes secured to opposite ends of the movable member and extending therefrom in opposite directions, guide-sheaves over which said ropes are extended, and mechanism for simultaneously taking u one of the last-mentioned ropes and equa 'ly paying out the other.

5. In hoisting and conve g mechanism, the combination of a gui eway, a trolley movable thereon, a bucket, and re take-up mechanism, with two ropes whic are con nected at their respective ends with the bucket and with the take-up mechanism, which ropes ass from the bucket up to the trolley and t ence in o posite directions to a point near the ends 0? said guidcwa'y, said ropes being respectively provided beyond v said points with loops which extend toward each other; two sheaves in said loops respectively, a movable member in which said two mounted in said bucket andhungm said loop,

and mechanism for taking and paying out :0

sad rope as required.

In-testimony whereof I hereuntoaflfix my signature in the presence of two witnesses.

FREDERICK W. LOVELL.

Witnesses:

E. L. THURSTON, E. B. GILgHmsT. 

